RTCMSC-104委员会制定的差分数据通讯标准是进行多系统数据融合、提供差分数据服务、实现RTK厘米级定位的关键和基础.针对最新的差分电文格式RTCM3.2版本的多信号信息组(Multiple Signal Message,MSM)实时解码问题,按照卫星信号标志量设计思想及数据分割原理,以.net基于面向对象的程序设计思路为基础,提出RTCM3.2版本MSM类型电文的解码思路、流程及实现方法,实现电文各字段的实时、完整提取.通过实测实验数据进行解码分析,证明该方法的正确性和可靠性.%The differential positioning data communication standards proposed by RTCM Special Committee SC-104 is the critical key and primary foundation of multi-constellation GNSS information fusion, differential data service and RTK cm level positioning implementation. To make latest RTCM3.2 message format compatible with previous versions and solve the analysis and decoding problem related with multi-GNSS multiple signal message, characteristics and algorithm were put forward based on net object-oriented programming technique. Decoding methods、Flowchart and implementation were presented against the RTCM3.2 version in corresponding to the design philosophy of satellite signal and the data division principle, finally messages were completely extracted in real time. The method is proved to be correct and consistent according to real-time observation data decoding and analysis.
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